The S 8/σ 8 tension in the large-scale structure can be explained by decaying dark matter
with an almost degenerate spectrum and small enough decay width. Here we propose the …

We propose a novel and comprehensive particle physics framework that addresses multiple
cosmological tensions observed in recent measurements of the Hubble parameter, S 8, and …

A bstract A light singlet scalar field feebly coupled through the super-renormalizable Higgs
portal provides a minimal and well-motivated realization of ultra-light bosonic dark matter …

The invisible decay of cold dark matter into a slightly lighter dark sector particle on
cosmological time-scales has been proposed as a solution to the S 8 tension. In this work …

Motivated by the dynamical reasons for the hierarchical structure of the Yukawa sector of the
Standard Model (SM), we consider an extension of the SM with a complex scalar field …

A bstract We investigate the phenomenology of a non-thermal dark matter (DM) candidate in
the context of flavor models that explain the hierarchy in the masses and mixings of quarks …